Window-screen.



PATENTBD NOV. 28, 1905.

M. SOLMSON.

WINDOW SCREEN.

APPLICATION FILED MAE.29,1905.

e lvwewtez MOSES SOLMSON, OF BALTIMORE, MARYLAND.

WINDOW-SCREEN,

Specification of Letters Patent.

Patented. Nov. 28, 1905.

Application filed March 29, 1905. $eria1 No. 252,683.

To all whom it may concern.-

Be it known that I, Mosns SoLMsoN, a citizen of the United States of America, and a resident of the city of Baltimore, State of Maryland, have invented certain new and useful Improvements in Window-Screens, of which the following is a specification.

My invention relates to a device designed for the purpose of justifying a window-screen so as to enable the screen to be expanded when it shrinks, reducing its size, or when the window-frame shrinks enlarging its size.

My invention has for its object to provide a device for positively expanding the size of the screen throughout its entire length on one side without exposing any space through which insects may enter the room and which may be quickly and easily adjusted and expanded to fit irregularities which may arise in a Window frame without removing the screen from the frame and While it is in place upon its guides.

The specific structure is hereinafter fully described, and pointed out in the claim.

Referring to the drawings, Figure l represents a front elevation of my screen, showing its usual insertion and tension springs on each side and the expanding section upon the other side. Fig. 2 is a transverse section of the side having the expanding device. Fig. 3 is a detached view, partially in vertical section, of the side of the frame having the expanding device.

Referring to Fig. 1, 1 is a window-screen having a deep groove 2 on the right side and flexible tension-springs 3 therein. This deep groove is to permit the insertion of the screen into the window by the compression of the springs 3 3 upon their guide-strip. 4 is the opposite side of the frame, having a groove 5, which is centrally located in the edge of the side 4, both sides of the groove being of the same length, as shown in Fig. 2, 5 and 5 This structure enables me to close all spaces through which insects might enter a room.

6 is a justifying-strip located in the groove 5, having a groove 7 upon its edge, which engages the guide-strip 8 upon the windowframe bead 9. The justifying-strip 6 is of the full length of the side 4 and fits closely in the groove 5, filling that completely or to a great extent.

10 represents coil-springs seated in notches 11 in the inner edge of justifying-strip 6 and bearing against the bottom of the groove 5. There are two or more of these springs for each strip. The drawing Fig. 1 shows two. This may be sufiicient for practical purposes. The spring 10 when compressed presses the justifying-strip out of the groove 5.

12 is a screw passed through a hole 13 in the inner edge of the side 4 of the frame 1 and tapped into the rear edge of the justifying-strip 6. The head of this screw is made preferably hemispherical, protrudes beyond the inner edge of the side 4, and is accessible from the interior of the room while the frame is in position in the window.

The turning of the screw 12 forward will draw the strip 6 into the groove 5, compress the spring 10, and narrow the frame. The turning of the screw in the opposite direction will permit the spring 10 to force the justifying-strip 6 out of the groove 5 and give to the screen a desired addition of width.

The adjustment is positive, and while the justifying-strip 6 is seated upon springs, and is therefore elastic in its bearing upon the guide 8, nevertheless the springs 10 are so much stronger than the springs 3 that the adjustment of the j ustifying-strip becomes positive in relation to the spring 3.

I am aware that somewhat similar devices have been madesuch, for instance, as are shown in the patent to Anderson, N 0. 284,588; patent to Dana, No. 329,287, and the patents to Burrows, Nos. 610,257 and 610,385but these devices I do not claim, as they all differ from my invention.

Having thus described my invention, What I claim, and desire to secure by Letters Patent, is

In a window-screen adapted to slide vertically in the window-frame the combination of a groove in the edge of one side of the frame, the sides of the frame on each side of the groove being equal length, a justifyingstrip, of the same length as the side of the frame, fitting the groove and filling the groove completely from one end of the frame to the other and from the bottom to the exterior edge producing the desired tension of the frame of the groove, and provided upon its exterior upon its slides. I edgg with}? grooge for engaging the frame- Signed by me at Baltimore, Maryland. gui e of t e Win oW-frame, means for giving 1 5 to the justifying-strip a positive adjustment MOSEb SOLMSON' in relation to the side of the frame in which Witnesses: it is seated, a groove in the opposite side of ARMSTEAD M. WEBB, the frame having flexible springs therein for JOHN E. CRoss. 

